PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Cadmium Cadmium is a natural element in the earth???s crust, usually found as a mineral combined with other elements such as oxygen.
http://www.w3.org/ns/prov#wasQuotedFrom
  • portlandoregon.gov